Updating a result set raja bokp manusia ngentor vs animall
The Result Set interface contains dozens of methods for getting the data of the current row. To update your changes to the row in the database, you need to invoke one of the following methods.
There is a get method for each of the possible data types, and each get method has two versions − public int get Int(int column Index) throws SQLException Returns the int in the current row in the specified column index.
A Result Set object maintains a cursor that points to the current row in the result set.
The second value in each row is 49 because that is the identification number for the supplier, Superior Coffee.
The last two values, the entries for the columns , which sends only one command and returns a single update count. )"); String(1, "Amaretto"); Int(2, 49); Float(3, 9.99); Int(4, 0); Int(5, 0); Batch(); String(1, "Hazelnut"); Int(2, 49); Float(3, 9.99); Int(4, 0); Int(5, 0); Batch(); // ...
JDBC provides the following connection methods to create statements with desired Result Set − The first argument indicates the type of a Result Set object and the second argument is one of two Result Set constants for specifying whether a result set is read-only or updatable. If you do not specify any Result Set type, you will automatically get one that is TYPE_FORWARD_ONLY. As with the get methods, there are two update methods for each data type − There are update methods for the eight primitive data types, as well as String, Object, URL, and the SQL data types in the package.
public void move To Insert Row() throws SQLException Moves the cursor to a special row in the result set that can be used to insert a new row into the database. For a better understanding, let us study Navigate - Example Code. Updating a row in the result set changes the columns of the current row in the Result Set object, but not in the underlying database.
The DBMS keeps track of which rows were selected, and it makes updates t o the proper rows, but they may be located anywhere in the table.
When a row is inserted, for example, there is no way to know where in the table it has been inserted.
In cases where the value is treated as a string anyway, there is no drawback.
Furthermore, if you want an application to retrieve values of any standard SQL type other than SQL3 types, use the are the name of the coffee and its price, respectively.
The concept to remember is that updates and related operations apply to the row where the cursor is positioned.
Even if there are many calls to object, not rows in the underlying database.
An update is the modification of a column value in the current row.Tags: Adult Dating, affair dating, sex dating